Core Pattern Rule: Stating Formal Intent with -고자
The pattern -고자 is a formal way to connect two clauses, where the first clause states the intention or purpose for the action in the second clause. It's equivalent to "in order to" or "with the intention of."
Formation
Simply attach -고자 to the stem of a verb, regardless of whether it ends in a vowel or a consonant.
Vowel stem: 가다 (to go) → 가고자
Consonant stem: 먹다 (to eat) → 먹고자
Usage
Formal Contexts: This pattern is primarily used in formal situations like speeches, presentations, academic writing, official documents, and formal emails. In casual conversation, it can sound overly stiff or literary.
Same Subject: The subject of both the intention clause (with -고자) and the action clause must be the same person or group.
성공하고자 노력했어요. / 집을 사고자 저축해요. / 문제를 해결하고자 모였습니다.
Synonyms & Differences: -고자 vs. -(으)려고
Both -고자 and -(으)려고 translate to "in order to," but they are not interchangeable. The key difference is formality and context.
-(으)려고 (For Everyday Use)
This is the standard, neutral pattern for expressing intention in most spoken and written Korean. It's the one you should use in daily conversations.
Example: 집을 사려고 저축해요. (I'm saving to buy a house.) - Sounds natural and common.
-고자 (For Formal Use)
This pattern is reserved for more formal, official, or literary contexts. Using it in a casual setting can make you sound like you're giving a speech.
Example: 집을 사고자 저축해요. (I am saving with the intention of buying a house.) - Sounds more like a formal declaration or a written statement.
Tip: When in doubt, use -(으)려고 for conversation. Save -고자 for when you are writing a formal email, giving a presentation, or want to sound particularly deliberate and serious.
집을 사고자 저축해요. (Formal) / 집을 사려고 저축해요. (Everyday) / 성공하고자 노력했어요. (Formal) / 성공하려고 노력했어요. (Everyday)